EM-TRF · EM-TRF-USV Operating and Installation Manual / Leaflet no. M375EV5 (
8/2018
)
11
For installation, wiring, and commissioning
observe the recognised technical regulations,
especially safety and accident prevention
regulations.
For any wiring work follow the national and
local regulations and guidelines for electrical
installation.
Danger!
Danger of electric shock! Do not touch
any live components! Electrical equipment
carries a dangerous electrical voltage.
• Only skilled qualified electricians are
allowed to work on the electrical system.
• Switch off the power supply before
working on any electrical equipment.
Wiring the EM-TRF and EM-TRF-USV
• Never connect two voltages!
When the expansion module for 230 V AC is
used, do not connect a 24 V AC/DC voltage to
the main PCB.
• Connect the 230 V AC supply voltage to the
upper terminals.
• Use the lower terminals to connect the
supply voltage for the next controller or for the
fume cupboard lighting control (EM-LIGHT
expansion module).
• Fix all connection cables to the wire clamping
bracket in the casing.
The terminals for the supply voltage carry a code
that identifies their application:
• L: 230 V AC, live wire
• N: 230 V AC, neutral conductor
• PE: protective earth
Wiring the EM-TRF-USV - contd.
• Connect the cable of the battery pack to the
2-pole socket .
• Be careful when connecting any cables so as to
not disconnect inadvertently the measuring tubes
of the volume flow controller.
230 V AC
6 Wiring